CN212296324U - Oil pumping device of electric screw pump capable of separately pumping and separating oil submersible - Google Patents
Oil pumping device of electric screw pump capable of separately pumping and separating oil submersible Download PDFInfo
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- CN212296324U CN212296324U CN202020532876.1U CN202020532876U CN212296324U CN 212296324 U CN212296324 U CN 212296324U CN 202020532876 U CN202020532876 U CN 202020532876U CN 212296324 U CN212296324 U CN 212296324U
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- pump
- oil
- oil outlet
- outlet pipe
- screw pump
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Abstract
An oil pumping device with a split-pumping and split-submersible electric screw pump comprises a split joint, an upper screw pump, an upper connecting shaft assembly, an upper motor protector, an upper submersible motor, a lower oil outlet joint, a packer, a lower screw pump, a lower connecting shaft assembly, a lower motor protector and a lower submersible motor which are sequentially connected, wherein the lower end of a lower pump cable is connected with the lower submersible motor, the lower end of the upper pump cable is connected with the upper submersible motor, the lower end of a bypass oil outlet pipe is connected with an eccentric oil outlet at the upper part of the lower oil outlet joint, the upper end of the bypass oil outlet pipe is connected with an eccentric oil inlet at the lower part of the split joint, the components are assembled into a whole and then connected into a sleeve at the lower part of the upper pump oil outlet pipe, the packer is expanded and then attached to the inner wall of the sleeve to separate two oil layers to be pumped, the upper part of the upper pump oil outlet pipe is hung on a well head, the lower pump oil outlet pipe is, the well fluid pumped by the upper screw pump can not enter the lower pump oil outlet pipe.
Description
Technical Field
The invention relates to an oil extraction device for an oil extraction well of an oil field, in particular to an oil pumping device of a separately pumping and separating submersible electric screw pump.
Background
At present, a plurality of oil layers are jetted on most oil wells, because the pressure and the water content of each oil layer are different, the oil layers interfere with each other during combined production, and the high-pressure layer laminates the low-pressure layer, so that the low-pressure layer can not play a role, even the problem that the high-pressure layer flows back to the low-pressure layer can occur, so that water channeling of the oil well is caused, and the production of the oil well is seriously influenced. The bottom of the Chinese patent application 210621085231.8 is a weighted oil well pump, the valve body is an eccentric structure, the diameter of the oil inlet valve ball is not limited by the pump diameter, the diameter of the oil inlet valve ball is increased, the oil inlet valve ball can work flexibly in a heavy oil well, the closing is immediate, the reliability of the oil well pump is improved, but the oil well pump is also limited by the diameter of a sleeve, and the space for increasing the diameter of the oil inlet valve ball is limited. The double-layer separate-production oil well pump is a sucker rod pump, the sucker rod and the oil pipe have relative contact motion, friction is inevitably generated between the sucker rod and the oil pipe, the problem that the sucker rod eccentrically wears the oil pipe occurs, the oil pipe and the sucker rod cannot be used after eccentric wear is generated, oil well operation is caused, the maintenance-free period of an oil well is short, the operation cost is increased, the consumption of the sucker rod pipe is increased, the production stop time of the oil well is long, and the yield of crude oil is reduced. According to these problems, the oil pumping device driven by the submersible motor is developed by the technicians, the device does not need a pumping rod, the problem of abrasion of the rod pipe does not exist, and the oil pumping device is widely concerned. But also has the following disadvantages: the submersible motor drives the centrifugal pump to pump oil, so that the centrifugal pump is suitable for a large-displacement oil production well, the pumping efficiency of the centrifugal pump in the oil well is very low, the centrifugal pump suitable for a small-displacement well is not available, the application range of the matching device is very small, and two layers of oil cannot be respectively exploited. Some researchers have developed a reciprocating oil pumping device driven by an oil submersible motor, such as chinese patent 2114211115830, which is a reciprocating oil pumping device driven by an oil submersible motor, and it is formed by organically combining a mature oil submersible motor, an oil well pump and a lifting screw, so that the rotary motion of the mature oil submersible motor is changed into reciprocating motion, but it cannot pump thick oil and well fluid with high sand content, and also cannot realize separate exploitation of two layers of oil.
Disclosure of Invention
The invention aims to design an oil pumping device of a separate pumping and separating submersible electric screw pump, which overcomes the problems in the prior art, can realize two-layer separate pumping and can be used in a small-displacement well, a heavy oil well and a well with high sand content.
The purpose of the invention is realized as follows: the oil pump comprises an upper oil outlet pipe, a shunt joint, a lower oil outlet pipe, an upper screw pump, an upper connecting shaft assembly, an upper motor protector, an upper submersible motor, a lower oil outlet joint, a packer, a lower screw pump, a lower connecting shaft assembly, a lower motor protector, a lower submersible motor, a sleeve, an upper pump cable, a bypass oil outlet pipe and a lower pump cable, wherein the shunt joint, the upper screw pump, the upper connecting shaft assembly, the upper submersible motor, the lower oil outlet joint, the packer, the lower screw pump, the lower connecting shaft assembly, the lower motor protector and the lower submersible motor are sequentially connected, the lower end of the lower pump cable is connected with the lower submersible motor, the lower end of the upper pump cable is connected with the upper submersible motor, the lower end of the bypass oil outlet pipe is connected with an eccentric oil outlet at the upper part of the lower oil outlet pipe, the upper end of the bypass oil outlet pipe is connected with an eccentric, The upper screw pump, the upper connecting shaft assembly, the upper motor protector, the upper submersible motor, the lower oil outlet joint, the packer, the lower screw pump, the lower connecting shaft assembly, the lower motor protector, the lower submersible motor, the upper pump cable, the bypass oil outlet pipe and the lower pump cable are assembled into a whole and then connected to the lower part of the upper pump oil outlet pipe and the lower part of the lower pump oil outlet pipe in a casing pipe, the packer is positioned between two oil layers to be pumped, the packer is expanded and then clung to the inner wall of the casing pipe to separate the two oil layers to be pumped, the upper part of the upper pump oil outlet pipe is hung on a well head, the lower pump oil outlet pipe is put into the upper pump oil outlet pipe, the lower part of the lower pump oil outlet pipe is inserted into the shunt joint and communicated with the upper part of the bypass oil outlet pipe, so that the well liquid pumped by the upper screw pump cannot enter the lower pump oil outlet pipe, the, The shunt joint and the lower pump-out oil pipe are pumped to the ground, well fluid pumped by the upper screw pump is pumped to the ground through the shunt joint and the upper pump-out oil pipe, and an upper pump cable and a lower pump cable are attached to the outside of the upper pump-out oil pipe.
The telescopic pipe is arranged on the lower pump oil outlet pipe, so that two ends of the lower pump oil outlet pipe are conveniently connected with the shunt joint and the lower oil outlet joint in place.
And the lower part of the lower submersible motor is provided with a pipe column anchor.
A lower centralizer is arranged between the lower connecting shaft assembly and the lower motor protector, and an upper centralizer is arranged at the upper part of the lower screw pump.
The invention has the beneficial effects that: the invention is formed by combining a mature oil-submersible motor, a screw pump and a mature matched tool, can adopt the screw pump to carry out layered oil extraction on stratums with interlayer difference, can carry out oil extraction on thick oil wells and sand producing wells with interlayer difference, overcomes the problems of the prior layered oil extraction device technology, can realize two-layer separate extraction and separation, can also be used on small-displacement wells, thick oil wells and wells with high sand content, and has remarkable economic benefit.
Drawings
FIG. 1 is an assembly drawing of an embodiment of the present invention.
Detailed Description
An embodiment of the present invention will be described below with reference to fig. 1.
The embodiment of the invention comprises an upper oil pumping-out pipe 1, a shunt joint 2, a lower oil pumping-out pipe 3, an upper screw pump 4, an upper connecting shaft assembly 5, an upper motor protector 6, an upper submersible motor 7, a lower oil outlet joint 8, a packer 9, a lower screw pump 11, a lower connecting shaft assembly 12, a lower motor protector 14, a lower submersible motor 15, a sleeve 17, an upper pump cable 18, a bypass oil outlet pipe 20 and a lower pump cable 21, wherein the shunt joint 2, the upper screw pump 4, the upper connecting shaft assembly 5, the upper motor protector 6, the upper submersible motor 7, the lower oil outlet joint 8, the packer 9, the lower screw pump 11, the lower connecting shaft assembly 12, the lower motor protector 14 and the lower submersible motor 15 are sequentially connected, the lower end of the lower pump cable 21 is connected with the lower submersible motor 15, the lower end of the upper pump cable 18 is connected with the upper submersible motor 7, the lower end of the bypass oil outlet pipe 20 is connected with an eccentric oil outlet at the upper part of the lower oil outlet joint, the upper end of a bypass oil outlet pipe 20 is connected with an eccentric oil inlet at the lower part of a bypass joint 2, the bypass joint 2, a lower pump-out oil pipe 3, an upper screw pump 4, an upper connecting shaft assembly 5, an upper motor protector 6, an upper submersible motor 7, a lower oil outlet joint 8, a packer 9, a lower screw pump 11, a lower connecting shaft assembly 12, a lower motor protector 14, a lower submersible motor 15, an upper pump cable 18, a bypass oil outlet pipe 20 and a lower pump cable 21 are assembled into a whole and then connected into a casing 17 at the lower part of the upper pump-out oil pipe 1, the packer 9 is positioned between two oil layers to be pumped, the packer 9 is expanded and then clung to the inner wall of the casing 17 to separate the two oil layers to be pumped, the upper part of the upper pump-out oil pipe 1 is hung on a well head, the lower pump-out oil pipe 3 is put into the upper pump-out oil pipe 1, the lower part of the lower pump-, the well fluid pumped by the upper screw pump 4 can not enter the lower pump oil outlet pipe 3, the well fluid pumped by the lower screw pump 11 can not enter the upper pump oil outlet pipe 1, the well fluid pumped by the lower screw pump 11 is pumped to the ground through the bypass oil outlet pipe 20, the shunt joint 2 and the lower pump oil outlet pipe 3, the well fluid pumped by the upper screw pump 4 is pumped to the ground through the shunt joint 2 and the upper pump oil outlet pipe 1, and the upper pump cable 18 and the lower pump cable 21 are attached to the outside of the upper pump oil outlet pipe 1.
The further measure of the invention is that the telescopic pipe 19 is arranged on the lower pump-out oil pipe 20, which is convenient for connecting the two ends of the lower pump-out oil pipe 20 with the shunt joint 2 and the lower oil outlet joint 8 in place. The connecting screw threads of the two ends of the lower pump-out oil pipe 20, the shunt joint 2 and the lower oil outlet joint 8 are oil pipe screw threads.
A further measure of the invention is that the lower part of the submersible motor 15 is fitted with a string anchor 16. The screw pump is prevented from loosening and falling down.
The invention has the further measure that a lower centralizer 13 is arranged between the lower connecting shaft assembly 12 and the lower motor protector 14, and an upper centralizer 10 is arranged at the upper part of the lower screw pump 11. The tools above and below the centralizer are positioned in the middle of the casing 17, and the normal work of each tool is ensured.
The two connecting shaft assemblies are flexible shafts, and can automatically eliminate offset motion generated by eccentric operation of the screw pump.
Well fluid pumped by the lower screw pump 11 is discharged to the shunt joint 2 through the bypass oil pipe 20 and then pumped to the ground through the lower pump oil pipe 3 for metering, well fluid pumped by the upper screw pump 4 is discharged to the shunt joint 2 and then pumped to the ground through the upper pump oil pipe 1 for metering, two layers of well fluid are separately pumped and separated, the output of the screw pumps can be respectively metered, and the working conditions of the two screw pumps can be respectively sampled, analyzed and judged.
Claims (4)
1. The utility model provides a divide and take out oily electric screw pump oil jack of diving of branch, including last pump oil pipe (1), reposition of redundant personnel joint (2), pump oil pipe (3) down, go up screw pump (4), go up connecting axle assembly (5), go up motor protector (6), go up oily motor (7) of diving, lower part oil outlet joint (8), packer (9), screw pump (11) down, connecting axle assembly (12) down, motor protector (14) down, oily motor (15) of diving down, sleeve pipe (17), go up pump cable (18), bypass oil pipe (20), pump cable (21) down, characterized by: the oil pump is characterized in that the oil pump comprises a flow dividing joint (2), an upper screw pump (4), an upper connecting shaft assembly (5), an upper motor protector (6), an upper submersible motor (7), a lower oil outlet joint (8), a packer (9), a lower screw pump (11), a lower connecting shaft assembly (12), a lower motor protector (14) and a lower submersible motor (15) which are sequentially connected, the lower end of a lower pump cable (21) is connected with the lower submersible motor (15), the lower end of an upper pump cable (18) is connected with the upper submersible motor (7), the lower end of a bypass oil outlet pipe (20) is connected with an eccentric oil outlet at the upper part of the lower oil outlet joint (8), the upper end of the bypass oil outlet pipe (20) is connected with an eccentric oil inlet at the lower part of the flow dividing joint (2), the lower oil outlet pipe (3), the upper screw pump (4), the upper connecting shaft assembly (5), the upper motor protector, The lower oil outlet joint (8), the packer (9), the lower screw pump (11), the lower connecting shaft assembly (12), the lower motor protector (14), the lower submersible motor (15), the upper pump cable (18), the bypass oil outlet pipe (20) and the lower pump cable (21) are assembled into a whole and then connected to the lower part of the upper pump oil outlet pipe (1) and put into the casing pipe (17), the packer (9) is positioned between two oil layers to be pumped, the packer (9) is expanded and then clings to the inner wall of the casing pipe (17) to separate the two oil layers to be pumped, the upper part of the upper pump oil outlet pipe (1) is hung on a well head, the lower pump oil outlet pipe (3) is put into the upper pump oil outlet pipe (1), the lower part of the lower pump oil outlet pipe (3) is inserted into the shunt joint (2) and is separated from the upper part of the bypass oil outlet pipe (20), so that well fluid pumped by the upper screw pump (4) can not enter, well fluid pumped by the lower screw pump (11) cannot enter the upper pump oil outlet pipe (1), the well fluid pumped by the lower screw pump (11) is pumped to the ground through the bypass oil outlet pipe (20), the shunt joint (2) and the lower pump oil outlet pipe (3), the well fluid pumped by the upper screw pump (4) is pumped to the ground through the shunt joint (2) and the upper pump oil outlet pipe (1), and the upper pump cable (18) and the lower pump cable (21) are attached to the outside of the upper pump oil outlet pipe (1).
2. The oil pumping device of the electric screw pump for separately pumping and separating oil-submersible according to claim 1, which is characterized in that: the bypass oil outlet pipe (20) is provided with a telescopic pipe (19), so that two ends of the bypass oil outlet pipe (20) are conveniently connected with the shunt joint (2) and the lower oil outlet joint (8) in place.
3. The oil pumping device of the sub-pumping and oil-submersible electric screw pump according to claim 1 or 2, which is characterized in that: and a pipe string anchor (16) is arranged at the lower part of the lower submersible motor (15).
4. The oil pumping device of the electric screw pump for separately pumping and separating oil-submersible according to claim 3, which is characterized in that: a lower centralizer (13) is arranged between the lower connecting shaft assembly (12) and the lower motor protector (14), and an upper centralizer (10) is arranged on the upper part of the lower screw pump (11).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020532876.1U CN212296324U (en) | 2020-04-13 | 2020-04-13 | Oil pumping device of electric screw pump capable of separately pumping and separating oil submersible |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020532876.1U CN212296324U (en) | 2020-04-13 | 2020-04-13 | Oil pumping device of electric screw pump capable of separately pumping and separating oil submersible |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN212296324U true CN212296324U (en) | 2021-01-05 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202020532876.1U Expired - Fee Related CN212296324U (en) | 2020-04-13 | 2020-04-13 | Oil pumping device of electric screw pump capable of separately pumping and separating oil submersible |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN212296324U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111236897A (en) * | 2020-04-13 | 2020-06-05 | 冯新永 | Oil pumping device of electric screw pump capable of separately pumping and separating oil submersible |
-
2020
- 2020-04-13 CN CN202020532876.1U patent/CN212296324U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111236897A (en) * | 2020-04-13 | 2020-06-05 | 冯新永 | Oil pumping device of electric screw pump capable of separately pumping and separating oil submersible |
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| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20210105 |